Taxonomy
Collection 1000223 (herbarium acc. no. ROHB01218) is the lectotype of Hebeloma quercetorum.Description
- arrow_drop_downarrow_drop_upCollecting details
Collection 1000223 was collected by L. Quadraccia on 10th November 1987 in Parco Naz. Circeo (LT), Piscina delle Bagnatore, Lazio, ITALY (approx. 41.235°N, 13.064°E, altitude approximately 275 m above sea level - Google maps). The ectomycorrhizal families Betulaceae (genus Carpinus) and Fagaceae (genus Quercus) were present.
The surrounding habitat was described as meso-hygrophilous woodland, corresponding to the IUCN habitat We map from the collector's description of the habitat to the International Union for Conservation of Nature (IUCN)'s definition using a standardised set of rules. Please see this page for a full list of IUCN habitats. 1.4: Forest – Temperate.
According to the GPS data the collection was in the Italian sclerophyllous and semi-deciduous forests WWF ecoregion The World Wildlife Fund (WWF) have divided the world into 867 terrestrial ecoregions. The ecoregion here is estimated by mapping from the GPS coordinates of the collection using data made available by Dinerstein et al (2017). Use this webtool to explore the ecoregions visually or see a full list of current ecoregions on Wikipedia. (biome: Mediterranean Forests, Woodlands & Scrub) and Koppen climate code Csa (Temperate, dry summer, hot summer).
- arrow_drop_downarrow_drop_upMacroscopic description
Cortina present: no.
Pileus: 25–75 mm diameter; shape convex; margin characters wavy; viscosity tacky when moist; spotting not recorded; hygrophanous not recorded; colour variation not recorded; with colour at centre clay-buff, cinnamon, umber; and colour at margin not recorded; with remains of universal veil not recorded.
Lamellae: attachment decurrent tooth; maximum depth up to 9 mm; number of complete lamellae 64; tears absent; white fimbriate edge present.
Stipe: 35–90 x 5–10 {median} x 8–17 {basal} mm; stipe Q 7.0–9.0; base bulbous; floccosity fibrillose; rooting no; mycelial chords no.
Context: texture firm; stipe interior superior wick; stipe flesh discolouring from base yes; slenderness measure 10.3; smell raphanoid; taste bitter, raphanoid weakly.
Spore deposit colour: analysis not yet complete.
Exsiccata: normal.
- arrow_drop_downarrow_drop_upMicroscopic description
Spores: shape amygdaloid, limoniform; colour through microscope yellow brown; guttulate no; papillate yes; Spore Code: O2; O3; P2; D3.
Basidia: 27.1–34.4 x 6.9–8.3 μm; ave. Q = 3.8; basidia spore nature not recorded.
Cheilocystidia: main shape gently clavate, cylindrical, ventricose; special features clamped septa, septa, slender; Cheilocystidia Ratios: A/M = 1.07; A/B = 0.81; B/M = 1.39.
Pleurocystidia: no.
Ixocutis: epicutis thickness (measured from exsiccata) 160 μm; ixocutis maximum hyphae width 4 μm; ixocutis hyphae encrustation no; shape of trama elements beneath subcutis ellipsoid, thickly sausage-shaped up to 20 μm wide.
Caulocystidia: caulocystidia maximum length 100 μm.
Spore (min) 5%-95% (max) mean median S.D. Length (µm) (9.8) 10.2–12.3 (13.9) 11.4 11.3 0.690 Width (µm) (5.6) 6.0–7.0 (7.3) 6.5 6.5 0.350 Q (1.55) 1.60–1.91 (2.10) 1.76 1.75 0.11 Cheilocystidium (µm) (min) 5%-95% (max) mean median S.D. Length (36) 39–84 (104) 67 69 16.71 Apex Width (3.7) 4.2–6.6 (7.1) 5.4 5.3 0.720 Median Width (3.5) 3.7–6.1 4.9 4.8 0.69 Basal Width (4.1) 4.4–9.3 (9.7) 6.6 6.4 1.63
- arrow_drop_downarrow_drop_upTemperature calculation
Max temp Min temp Precipitation Annualised average (1987) 20.30 °C 11.69 °C 73.10 mm Collection month (11/1987) 16.85 °C 9.66 °C 185.51 mm Max month (1987) 29.95 °C 20.41 °C 185.51 mm
- arrow_drop_downarrow_drop_upAnalyse this collection
Compare this collection to its species
This section compares data for this collection against its true species and also against the most likely species as determined by our identifier. More often than not these will be the same species, but where this is not the case, the data may be used to help explain why the identifier got it wrong.Image gallery
Detailed statistics
| Spore measurements | My value | Species mean value | Position |
|---|---|---|---|
| Count | 51.0 | 47.50 | 7th–8th/28 |
| Average length | 11.4 | 11.16 | 8th–10th/28 |
| Average width | 6.5 | 6.65 | 18th–20th/28 |
| Standard deviation of length | 0.69 | 0.70 | 7th/16 |
| Standard deviation of width | 0.35 | 0.32 | 5th/16 |
| Median length | 11.3 | 11.18 | 7th–8th/16 |
| Median width | 6.5 | 6.69 | 11th/16 |
| Minimum length | 9.8 | 9.75 | 8th/16 |
| Minimum width | 5.6 | 6.03 | 14th–15th/16 |
| Low length | 10.2 | 10.11 | 7th–8th/16 |
| Low width | 6.0 | 6.22 | 12th–14th/16 |
| High length | 12.3 | 12.18 | 4th–9th/16 |
| High width | 7.0 | 7.18 | 9th–11th/16 |
| Max length | 13.9 | 12.69 | 2nd–3rd/16 |
| Max width | 7.3 | 7.37 | 9th/16 |
| Spore feature | Value | Commonalities |
|---|---|---|
| Ornamentation | O2; O3 | 72% of collections; 75% of collections |
| Perispore loosening | P2 | 41% of collections |
| Dextrinoidity | D3 | 100% of collections |